NYC-WTC_000190040

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1816 Lab Group #: 6735 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 15 Grid Opening Size: 0 01124 Client Sample #: 18 Area Examined: 0 04496 mm-

GRID BOX: Magnification: 20,000 GRID ID: Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 2/19/02

Analysis Perlormed By: ROMAN PEYSAKHOV

GO Structure Structure Type Length ID of Structure N or V EDS (Nonadb No F B C M >=05 p Chrys Amphibole Nonasb Ambig/ND No Coord <5m Elements)

Z-K f 102-3X570 (/

Struct = > 0 5|j >5 I Aspect Ratio Grid acceptance = Positive diffraction pattern properties conforming to tf^dissolved filter, overlapped or folded Totals laboratory identificabon criteria observed <10% particulate coverage >50% coverage ate

EDS spectrum conforming to laboratory least 20 unfolded or overlapped gnd squares <5% holes or opaque areas F B c M >5p

identification cnteria observed Chrysotile AMPHIBOLES ! Amphibole F = Single Fiber Amosite ! B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anthophyllite Non-Asbestos Tremolite M = Matrix Actinolite Non-Identified NSD = No Structures Detected

CITY_21MC100_003088513

NYC-WTC_000190040